US1085915A - Pedal-action for pianos. - Google Patents

Description

A. A. HUSEBY.

PEDAL ACTION FOR PIANOS.

APPLICATION FILED MAR. 1, 1913.

Patented Feb. 3, 1914.

ALBERT A. HUSEBY, OF CHICAGO, ILLINOIS.

PEDAL-ACTION FOR PIANOS.

Specification of Letters Patent.

Patented Feb. 3. 1914.

Application filed March 1, 1913. Serial No. 751,418.

To all whom it may concern Be it known that I, ALBERT A. I'IUSEBY, a citizen of the United States, residing at Chicago, in the county Illinois, have invented certain new and useful, Improvements in Pedal-Actions for Pianos, of which the following is a specifica i tion.

This invention relates to pedal actions for pianos and like musical instruments employing expression-pedals, and has for its object to provide a simplified and improved pedal action of that type which employs one or more horizontal rock-shafts between the pedals and the lifter-rods actuated thereby and which affords variable movements of the hammer-rail by means of two pedals acting through a single rock-shaft and lifter-rod.

My invention, action, understood when considered in connection with the accompanying drawing illustrating one practical embodiment thereof, in which Figure 1 is a top plan view of the lower portion of a piano case showing my improved pedal action applied thereto; and Fig. 2 is an end elevation, partly in section, as viewed from the right of Fig. 1.

Referring to the drawing, 5 designates the damper pedal and 6 and 7 soft pedals which operate in a well known manner to shift the its construction, mode of hammer-rail toward the strings reducing the length of hammer stroke. These pedals are pivoted at 8, 9 and 10, respectively, in and between bearing-blocks 11. J ournaled in bearing-blocks 12 is a rock-shaft 13 which, at one end, has a forwardly-bent arm 14: terminating in a right-angle bend 15 that directly overlies the inner end of the damper pedal 5. The other end of the rockshaft has a forwardly extending arm 16 that engages the lower end of the lifter-rod 17 of the dampers. Also journaled in the bearing-blocks 12 parallel with the rockshaft 13 is another similar rock-shaft 18 having at one end a forwardly-bent arm 19 terminating in a right-angle bend 20 that overlies the inner ends of both of the soft pedals 6 and 7 The other end of rock-shaft 18 has a forwardly-bent connected the lower end of the lifter-rod 22 of the hammer-rail.

It will be observed that the laterally excopiel of this potent may be obtained to:

of Cook and State of g and advantages, will all be readily arm 21 to which is i l tending arms of the rock-shafts 13 and 18 i which engage the pedals and the lifter-rods, respectively, are both on the same side of each rock-shaft, so that the combined weight 1 of these arms, together with the damper l springs and the weights of the hammer-rail and lifter-rods 17 and 22 are amply sulfi- 1 cient to normally maintain the pedals 5, 6 l and 7 in elevated position without requiring the use of springs for this purpose. It will further be observed that the pivots 9 and 10 of the pedals 6 and 7, respectively, are relatively olfset, thus affording different lengths of lever arms formed by the inner portions of said pedals, whereby the pedal 6 throws the hammer-rail closer to the strings than the pedal 7, so that, while both the pedals 6 and 7 are soft pedals. they differ in respect to the degree of sound-softening effects which they produce.

Bent wire springs 23 and 24c overlie the inner portions of the pedals 6 and 7, respectively, and are anchored at their ends in the gbearing-blocks 11. The purpose of these i springs is simply to prevent either of the pedals 6 and 7 from dropping when the other is actuated.

I claim- 1. In a piano pedal action, the combination with a pair of pedals pivoted between their respective ends, and a lifter-rod, of a rock-shaft having an arm overlying and engaging the inner ends of said. pedals and another arm engaging said lifter-rod, the l pivots of said pedals being at different dis- & tances from the respective points of engagement of the inner ends of said pedals with 1 said arm.

1 2. In a piano pedal action, the combina- 1 tion with a pair of pedals pivoted between their respective ends, and a lifter-rod, of a l l l l 1 l rock-shaft having at one end an arm formed with a terminal portion lying parallel with the rock-shaft and resting upon the inner ends of said pedals and another arm on the same side of said rock-shaft engaging said lifter-rod, the pivots of said pedals being at different distances from the respective points of engagement of the inner ends of said pedals with the said terminal portion of said arm.

ALBERT A. HUSEBY. Witnesses:

JoYon M. LUTZ, SAMUEL N. POND.

five cents each, by addressing the Commissioner of Patents. Washington, D. O."

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